<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>文本格式化标签</title>
</head>
<body>
    <strong>加粗文字</strong>
    <b>加粗文字</b>

    <em>倾斜文字</em>
    <i>倾斜文字</i>

    <del>删除线</del>
    <s>删除线</s>
    
    <ins>下划线</ins>
    <u>下划线</u>
</body> 
</html>